A method includes receiving beacons originating from endpoints. The beacons are received during a single beacon interval and are sent using a power strength to reach nodes within physical proximity of the endpoints. The method also includes establishing a list including multiple endpoints from which a node receives the beacons at more than a threshold percentage of the beacon intervals. The method includes detecting that a threshold number of the beacon intervals have passed since receiving a most recent beacon from an endpoint. The method includes outputting a ping at full power strength to the endpoint requesting a response. When the response is not received from the endpoint, the method includes transmitting an outage alarm to a next topologically higher layer of a mesh network. The outage alarm includes an identification of the endpoint and a timestamp indicating when the first node received the most recent beacon from the endpoint.